package com.atguigu.common.valid;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import java.util.HashSet;
import java.util.Set;

/**
 * description: ListValueConstraintValidator
 * date: 2022/10/18 19:20
 * author: MR.孙
 */
public class ListValueConstraintValidator implements ConstraintValidator<ListValue, Integer> {

    private Set<Integer> set = new HashSet<>();


    /**
     * 初始化校验方法
     * @param constraintAnnotation annotation instance for a given constraint declaration
     */
    @Override
    public void initialize(ListValue constraintAnnotation) {

        int[] values = constraintAnnotation.value();
        for (int value : values) {
            set.add(value);
        }
    }

    /**
     * 校验值
     * @param value object to validate
     * @param context context in which the constraint is evaluated
     *
     * @return
     */
    @Override
    public boolean isValid(Integer value, ConstraintValidatorContext context) {
        return set.contains(value);
    }
}
